Content and message. 3D registration of real property in Denmark. Content and message. Introduction. Cadastral register

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1 Content and message 3D of real property in Denmark Jantien Stoter Section GIS technology, Delft University of Technology (NL) Esben Munk Sørensen and Lars Bodum GeoInformation and MediaTechnologi, Aalborg University (DK) FACT: Real property and spatial legal rights in the physical world is in three dimensions! HISTORY: Until today of properties has always been done in one dimension (text) or two dimensions (cadastral maps). Accessible technologies for describing and measuring and communication have been used through history. Content and message THE TECHNOLOGY-DRIVEN POSSIBILITIES: Facing three-dimensional digital technologies, it becomes still more interesting to discuss and investigate methods and needs for three-dimensionall description and of spatial legal objects. THE PAPER: The paper in the procedings discusses the result of a case study on the spatial legal objects in Denmark trying to create transparency in the understanding of the three dimensions of real property and spatial legal objects. Finally, the need for 3D is discussed. Introduction The growing interest for 3D cadastral is caused by a considerable increase of value of property, by increasing situations with property on top of each other - the number of tunnels, apartments, cables and pipelines, underground parking places and shopping malls have grown considerably the last 40 years -and by an upcoming 3D approach in other domains (3D GIS, 3D planning) which makes a 3D approach of cadastral technologically realisable. Dutch research was started to study the needs and to see if other countries than the Netherlands meet the same problems, a comparison case study was carried out on 3D situations and cadastral in Denmark. 4 Registers of Property in Denmark 1) Cadastral register (Min. of Environment) 2) Land register /Land Book (Min. of Justice) 3) Building and Dwelling Register (Min. of Business and Economy) 4) Property Valuation Register (Min. of Taxation) Cadastral register In the beginning a system supporting the collection of land taxes. Nowadays is to support an efficient land market, as well as to provide a basis for appropriate land management. The cadastral register consists of four elements:» a register of real properties (ejendom) and land parcels (see below)» a cadastral map (see below)» measurement sheets related to boundaries» register of control points used for cadastral surveys The parcel and property register information on parcels such as parcel identifier, area, area of road, area of protected forest, area of coast protection zone, area of dune protection zone, number of separate land of which a parcel consists, share in common parcel, as protected forest, as coastal zones, polluted land parcel, land use.. Apartment are not known in the cadastral system. Cadastral map Legal overview map that shows the registered boundaries of land parcels and roads. Also other information such as other boundaries, t.ex.in case the stream is a boundary, road boundary, railway boundary, edge of lake, coastline, parish boundary) and areas of public restrictions which restrict owners to use the land freely (protected forest, dune protection zone, coast protection zone, polluted land parcel). 1

2 Land register The land registry is a register of rights in real properties and falls under the responsibility of the Ministry of Justice. It contains legal data like titles, name of landowners, mortgages and easements (servitudes). Since 2000, the land register is fully digitised although the legal documents are still only analogously available. The state guarantees the contents of the land register. The land registry is decentralised to the (100) local courts. The land register uses the identifications of real property established by the cadastre. Building and Dwelling Register The municipalities (275 in total) are responsible for the updating of two real property s: the building and dwelling (BDR) and the valuation (SVUR). The Ministry of Economic and Business Affairs is responsible for BDR. Information on three levels of : Property (related to buildings) that is the same property as registered in the cadastral system. The attributes maintained at property level are type of ownership, water supply system, sewage disposal system, etc. Building. The main attributes maintained at building level are the purpose for which the building is used, accessibility from the street, number of dwellings, year of construction (rebuilding, extension), basement area, top story area, number of floors, etc. Units. The main attributes maintained at unit level are the purpose of dwelling/unit, type of dwelling, area of dwelling (demarcated by outside boundary of walls), area used for living, area used for business, number of rooms, etc. A property (consisting of one or more land parcel(s)) may consist of one or several buildings; a building may be subdivided into. New buildings and every renovation of a building has to be apporved by municipality, accompanied by drawings. An an archive containing detailed information on construction and renovations of every building is maintained. No spatial information. Valuation register The municipality also maintains a sales and valuation register, to record valuation on single properties to assist authorities in calculating and collecting property valution for property taxes. The tax authorities use the sales and valuation register for calculation and collection of taxes. The valuation contains information concerning identification of the property (cadastral number and property number), land area of each parcel and all results of taxation. The valuation contains two parts: valuation of land and valuation of buildings. When a property is transferred, the value used for buying the property is entered into the valuation. The property number is the property number from the cadastral. However, in case of apartment, the properties are not known as individual properties in the cadastral. Therefore self-owned apartment get identifiers for property in the valuation register although they are not known as individual properties in the cadastral. These properties cannot be subdivided into buildings and. Cross-reference register (KKR) Originally the building and dwelling, the valuation and the cadastral (and the land ) were created as separate s. To be able to link these separate s, the cross reference register was created in The cross reference register contains all key identifications and the unique cross-reference data between the building and dwelling register, the valuation register and the cadastral register by which it is possible to exchange data between the different registers. The register has no data contents. It only contains common keys as well as the relations between these keys. Beyond functioning as a property map the digital cadastral map can also be used as a key of access to the other property-related registers. The logic property datamodel A street 2

3 3 similar buildings Cadastral Map Self-owned apartment Cadastral Register Self-owned apartment 19 properties Land Registry 1 property 1 property and information about owners Building and Dwelling Register. -At unit level, information on the individual (apartment ) is maintained for all three cases. The following (addresses) are known in the building and dwelling at Holbergsgade 2, 3 and 5: 3 similar buildings 1. Holbergsgade 2, 1 TH 2. Holbergsgade 2, 1 TV 3. Holbergsgade 2, 2 TH 4. Holbergsgade 2, 2 TV 5. Holbergsgade 2, 3 TH 6. Holbergsgade 2, 3 TV 7. Holbergsgade 2, 4 TH 8. Holbergsgade 2, 4 TV 9. Holbergsgade 2, ST TH 10. Holbergsgade 2, ST TV 11. Holbergsgade 3, 1 TH 12. Holbergsgade 3, 1 TV 13. Holbergsgade 3, 2 TH 14. Holbergsgade 3, 2 TV 15. Holbergsgade 3, 3 TH 16. Holbergsgade 3, 3 TV 17. Holbergsgade 3, KL 18. Holbergsgade 3, ST TH 19. Holbergsgade 3, ST TV 20. Holbergsgade 5, 1 TH 21. Holbergsgade 5, 1 TV 22. Holbergsgade 5, 2 TH 23. Holbergsgade 5, 2 TV 24. Holbergsgade 5, Holbergsgade 5, 4 TH 26. Holbergsgade 5, 4 TV 27. Holbergsgade 5, KL 28. Holbergsgade 5, ST TH 29. Holbergsgade 5, ST TV Cadastral parcel Cadastral property Land registry Building and dwelling Valuation Self-owned apartment (Ejerlejlighedsejendom) (s) (Udlejningsejendom (s) Ground parcel(s) Whole apartment complex (Privat Andelsboligforening) (s) - Ground parcel(s) - Inf. on association Whole apartment complex 3

4 A tunnel two roads crossing Cadaster Property Information The Metro in Copenhagen Registration in Land Registry Water-pipeline Køge, near Copenhagen. -crossing several private parcels. The legal status of this infrastructure object has been registered by means of servitudes established on the intersecting parcels. In order to avoid that a part of the parcels, which are not crossing with the pipeline, are encumbered with servitudes, new parcel boundaries were generated. Although this solution makes it possible to indicate the location of water-pipelines on the cadastral map, the subdivision process leads to very small parcels (figure 9). The tunnel is not considered as real property Restictions for neighbourparcels and effected parcels is registred as servitudes in the Land Registry A disadvantage is that the pattern of parcels is dictated by infrastructure below the surface. Conclusion 1(3) The legal instruments in Denmark are sufficient to establish rights needed in 3D. However, the main objective of (Danish) cadastral is to support an efficient land market, as well as to provide a basis for appropriate land management. Consequently, the cadastre and the land registry should not only secure rights on real properties but also provide insight in the legal status of real properties. Concerning 3D, the current Danish cadastre does not provide insight into the third dimension for a number of reasons. Since information on real estate is maintained in four different s, information on real properties in general is not straightforward accessible. Different s need to be queried to get insight in the factual situation. Theoretical and transparancy problems - 2(3) The cadastre does not maintain: information on different types of land use on one parcel (only the main use of a parcel is maintained) information on rights, restrictions and subjects of rights and restrictions (with the exception of public restrictions) Information on condominium rights and other 3D spatial legal rights to apartment is not maintained in the cadastral system. The land registry only provides additional information in case of self-owned apartments. A visual overview of every floor of an apartment complex is available in the land registry, although the overviews are only analogously maintained in 2D and not geo-referenced. These drawings are maintained in titles and can therefore not be queried. Information on self-owned apartment as well as information on other types of apartment (indirect ownership and rented apartment ) can be found in the building and dwelling, although this information does not include the person who uses (owns or rents) the apartment unit. The use of servitudes in case of infrastructure objects meets some complications. The physical object is subdivided into as many pieces as there are surface parcels servitudes need to be established and spatially determined for all intersecting parcels 4

5 If 3D approach is considered 3(3) Juridical level: To be addressed how real property on top of each other can be established. At this moment condominium rights is the only juridical instrument to establish a horizontal division of real property. The of rights is only a matter of the land registry. On the other hand, the of real property is only a matter of the cadastre. Therefore, a first step is to bring the real right of the land registry and the cadastral real property together. Political level: To decide reorganisation on the Ministries involved and to confirm a common conceptual model for s. Cadastral level: Extending the cadastral map into 3D to be able to incorporate 3D information on rights and physical objects requires further study and decisions at the cadastral level, i.e. how to organise and implement a system that supports 3D information. 3D information on physical objects could be obtained from companies outside the cadastre. Technical level covering different aspects.(dbms to maintain 3D data, 3D CAD to model 3D data, 3D GIS to analyse 3D data, Virtual Reality to visualise 3D data) need to be studied to be able to effectuate a 3D cadastre (or a 3D real property ) in Denmark. 5